Update Links
For the optimization we define different areas of the geometry. These are mainly Design and Nondesign spaces.
...
Tipp: Avoidance of stress rising on Design space boundaries. Sometimes it is useful to reduce the Design space a little bit for the optimization by subtracting an offset. The optimization is carried out with this reduced Design space. However, the intersection afterwards is done with the originally defined Design space in order to avoid sharp edges and thus stress risings. This way you avoid stress risings on the boundaries after you have combined your optimization result with your original design space.